CN215361514U - Seat and baby carriage with same - Google Patents

Abstract

The utility model discloses a seat and a baby carriage with the seat, wherein the seat comprises a sitting part, a backrest and a supporting part, the lower end of the backrest is pivoted with the sitting part and can move back and forth relative to the sitting part, the lower end of the supporting part is pivoted with the sitting part, and the upper end of the supporting part is pivoted with the backrest; when the seat is in an unfolded state, the pivoting position of the lower end of the backrest and the sitting part and the pivoting position of the lower end of the support part and the sitting part are arranged at intervals front and back, so that the backrest and the support part can form a barrier to the side edge of the seat, and a child sitting in the seat can be better protected; when the seat is folded, the backrest can move backwards relative to the sitting part, then the backrest rotates forwards and downwards, and the supporting part is driven to rotate forwards and downwards, so that the backrest and the supporting part are relatively close to the sitting part, the seat is folded, at the moment, the backrest and the supporting part are close to the sitting part, and the whole volume of the folded seat is small.

Description

Seat and baby carriage with same

Technical Field

The utility model relates to the field of infant products, in particular to a seat and a baby carriage with the seat.

Background

The conventional seat generally comprises a seat part and a backrest, wherein the backrest is generally arranged as a backrest with the lower end pivoted to the rear end of the seat part, the backrest is completely positioned at the rear side of the seat part in the unfolded state, and when the seat is not needed to be used temporarily, the backrest can rotate forwards to be close to the seat part to fold the seat so as to reduce the occupied volume of the seat. Although the conventional seat design can be folded to reduce the occupied volume, when the seat is in the unfolded state, the backrest is completely positioned at the rear side of the sitting part, so that the side edge of the seat cannot be enclosed, the child sitting in the seat cannot be well protected, and the child sitting in the seat (namely sitting on the sitting part) is easy to slip out from the side edge of the seat and receive damage.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcoming the above-mentioned disadvantages and providing a seat and a stroller having the seat, wherein the seat is formed with a barrier at the side and the volume of the seat is small after folding.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a seat can be converted between an unfolding state and a folding state and comprises a sitting part, a backrest and a supporting piece, wherein the lower end of the backrest is pivoted with the sitting part and can move back and forth relative to the sitting part; when the seat is in the unfolding state, the pivoting position of the lower end of the backrest and the sitting part and the pivoting position of the lower end of the support piece and the sitting part are arranged at intervals from front to back.

The pivoting position of the lower end of the backrest and the sitting part is positioned at the front side of the pivoting position of the lower end of the support part and the sitting part; the back lower end of the supporting piece is pivoted on the sitting part, and the front upper end of the supporting piece is pivoted on the backrest.

A first locking mechanism for preventing the backrest from moving back and forth relative to the sitting part is arranged between the lower end of the backrest and the sitting part.

The first locking mechanism comprises a first locking piece which is connected to the lower side of the backrest in a relatively left-right moving mode and a first locking hole which is arranged on the sitting portion, and the first locking piece can extend into the first locking hole towards one side of the sitting portion; preferably, a first driving member is connected to the lower side of the backrest in a relatively vertically movable manner, the first driving member is connected to the first locking member, and the first driving member moving downward can drive the first locking member to move toward a side away from the seat.

The seat part is provided with a matching groove which is opened towards the outside and extends forwards and backwards, correspondingly, the lower end of the backrest is provided with an accommodating part, one side of the accommodating part is provided with a connecting part, the connecting part extends into the matching groove, and the front side of the side wall of the matching groove, which is far away from the accommodating part, is provided with the first locking hole; the seat is characterized in that an accommodating space is formed in the accommodating part, a through hole which penetrates through the connecting part from left to right and is communicated with the accommodating space is formed in the connecting part, the first driving part can be connected in the accommodating space in a relatively up-and-down moving mode, and when the seat is in an unfolded state, one end, facing the sitting part, of the first locking part can penetrate through the through hole and then extend into the first locking hole.

The first connecting seat is relatively and fixedly arranged in the accommodating space, the first connecting seat is provided with an accommodating cavity with an upward opening, the first driving piece can be relatively and vertically arranged in the accommodating cavity, and a through hole which penetrates through the accommodating cavity from left to right is formed in the side wall of the accommodating cavity facing one side of the sitting part so as to allow the first locking piece to pass through; preferably, an opening is arranged on one side of the accommodating space far away from the sitting part.

The first driving piece is provided with a through hole which is arranged in a penetrating mode from left to right, one side, back to the sitting portion, of the first locking piece penetrates through the through hole, first driving holes are formed in the front side wall and the rear side wall of the through hole respectively, one side wall of each first driving hole is provided with a first inclined surface, a first connecting hole is formed in the first locking piece, and a first pin penetrates through the first connecting hole and the first driving hole; the front side wall and the rear side wall of the accommodating cavity are provided with slotted holes, and the front end and the rear end of the first pin bolt respectively extend into the slotted holes.

And a first elastic piece is arranged between the first locking piece and the backrest or between the lower side of the first driving piece and the backrest, and the first locking piece keeps the trend of moving towards one side of the sitting part under the action of the first elastic piece.

The backrest comprises a lower backrest part and an upper backrest part, the lower side of the upper backrest part can be relatively and vertically moved and is connected with the lower backrest part, and the front upper end of the supporting piece is pivoted with the lower backrest part; first locking mechanical system set up in between lower back lower extreme and the seat, be provided with between upper back downside and the lower back and be used for restricting the relative second locking mechanical system that reciprocates of both, just first locking mechanical system and second locking mechanical system are set up to, after second locking mechanical system unblock, but the lower back of moving down unlocks the second locking mechanical system.

The lower side of the lower backrest part is fixedly connected with a second connecting seat, the lower end of the second connecting seat is provided with a driving part, the lower end of the driving part is positioned outside the lower end of the upper backrest part, the upper backrest part is moved downwards after the second locking mechanism is unlocked, and the driving part of the second connecting seat which moves downwards together with the upper backrest part can push the first driving part to move downwards.

The second locking mechanism comprises a second driving piece arranged in the upper backrest part and connected with the second connecting seat in a relatively up-down moving mode, a second locking piece connected with the second connecting seat in a relatively up-down moving mode, the lower side of the upper backrest part is connected with the lower backrest part in a relatively up-down moving mode, a through hole and a second locking hole are respectively formed in the side walls of the corresponding positions of the upper backrest part and the lower backrest part, and when one end of the second locking piece penetrates through the through hole and is inserted into the second locking hole, the second locking mechanism is in a locking state.

The second connecting seat is provided with an accommodating groove with an opening facing one side of the via hole, the other end of the second driving piece can be relatively movably arranged in the accommodating groove, the second driving piece is provided with a second driving hole, and one side wall of the second driving hole is provided with a second inclined surface; correspondingly, a second long hole is formed in the second connecting seat, a second connecting hole is formed in the second locking piece, and a second rivet penetrates through the second connecting hole in the second driving hole, the second long hole and the second locking piece to connect the second driving piece, the second connecting seat and the second locking piece.

A second elastic piece is arranged between the second locking piece and the second connecting seat or between the second driving piece and the second connecting seat, and under the action of the second elastic piece, the second locking piece keeps the trend of moving towards one side of the through hole; preferably, a wall portion of the lower side of the lower backrest portion on the same side as the second locking hole is provided with a third locking hole into which one end of the second locking member can extend.

An inner pipe is relatively fixedly arranged in the lower backrest part, the lower end of the upper backrest part can be arranged in the inner pipe in a relatively up-and-down moving manner, a guide hole extending up and down is arranged on the side wall of the inner pipe, and the end part of a connecting piece for connecting the upper backrest part and the second connecting seat extends into the guide hole; preferably, the seat further includes a canopy seat disposed on the upper backrest portion, and a canopy having one end pivotally connected to the canopy seat, and when the upper backrest portion moves downward until the lower end of the canopy seat abuts against the upper end of the lower backrest portion, the first locking mechanism is in an unlocked state.

A baby carriage comprises the seat.

The utility model has the beneficial effects that:

1. the backrest, the supporting piece and the sitting part are arranged in such a way that the backrest and the supporting piece can form a fence for the side edge of the seat when the seat is unfolded, so that a child sitting in the seat can be better protected; and after being folded, the backrest and the supporting piece are close to the sitting part, so that the volume of the folded seat is small.

2. After the second locking mechanism is unlocked, the upper backrest part is moved downwards to unlock the second locking mechanism, so that the whole length of the backrest can be reduced when the seat is folded, and the whole volume of the folded seat is smaller.

Drawings

FIG. 1 is a perspective view of the seat of the present invention in a deployed condition;

FIG. 2 is a schematic plan view of the seat of the present invention in a deployed condition;

FIG. 3 is a partially enlarged schematic view of a cross section taken along the direction B-B in FIG. 2;

FIG. 4 is a partially enlarged schematic view of a cross section taken along the line A-A in FIG. 1;

FIG. 5 is an enlarged, partially cross-sectional, schematic view of the seating portion of the present invention;

fig. 6 is a schematic plan view of the seat of the present invention during the folding process;

FIG. 7 is a partially enlarged schematic view of a cross section taken along the direction C-C in FIG. 6;

FIG. 8 is an exploded, enlarged schematic view of the first locking mechanism of the seat of the present invention;

FIG. 9 is an exploded enlarged schematic view of a second locking mechanism of the seat of the present invention;

fig. 10 is a schematic plan view of the seat of the present invention during further folding;

fig. 11 is a schematic plan view of the seat of the present invention in a folded state;

fig. 12 is a perspective view of the seat of the present invention in a folded state (the seating portion is not shown).

Detailed Description

As shown in fig. 1 to 12, the seat of the present invention can be converted between an unfolded state and a folded state, and comprises a seat part 1, a backrest 2, and a support member 3, wherein the lower end of the backrest 2 is pivoted to the seat part 1 and can move back and forth relative to the seat part 1, the lower end of the support member 3 is pivoted to the seat part 1, and the upper end is pivoted to the backrest 2; when the seat is in the unfolded state, the pivoting position of the lower end of the backrest 2 and the sitting part 1 and the pivoting position of the lower end of the support 3 and the sitting part 1 are arranged at intervals from front to back.

In this embodiment, the pivotal position of the lower end of the backrest 2 and the seat portion 1 is located at the front side of the pivotal position of the lower end of the support 3 and the seat portion 1. The back lower end of the supporting piece 3 is pivoted on the sitting part 1, and the front upper end is pivoted on the backrest 2.

A first locking mechanism for preventing the backrest 2 from moving back and forth relative to the sitting part 1 is arranged between the lower end of the backrest 2 and the sitting part 1. In this embodiment, the first locking mechanism includes a first locking member 41 connected to the lower side of the backrest 2 in a relatively leftward and rightward movable manner, and a first locking hole 11 disposed on the seat portion 1, and the first locking hole 11 is configured to allow the first locking member 41 to extend toward one side of the seat portion 1. When the first locking member 41 extends into the first locking hole 11 toward one end of the seat part 1, the first locking mechanism is in a locked state, and the lower end of the backrest 2 cannot move back and forth relative to the seat part 1.

A first driving member 42 is connected to the lower side of the backrest 2 in a relatively up-down moving manner, the first driving member 42 is connected to the first locking member 41, and the first driving member 42 moving downward can drive the first locking member 41 to move toward the side away from the sitting portion 1 and disengage from the first locking hole, i.e. the first locking member 41 disengages from the first locking hole 11 toward one end of the sitting portion 1, the first locking mechanism is unlocked, and the lower end of the backrest 2 can move back and forth relative to the sitting portion 1.

A first driving hole 421 is formed in the first driving member 42, and a side wall of the first driving hole 421 is set as a first inclined surface 422; the first locking member 41 is provided with a first connection hole 411, and a first pin 43 passes through the first connection hole 411 and the first driving hole 421 to connect the first driving member 42 and the first locking member 41. When the first driving member 42 moves downward, the first inclined surface 422 pushes the first pin 43 to move away from the seat portion 1, thereby pushing the first locking member 41 to move away from the seat portion 1 and disengage from the first locking hole 11, and the first locking mechanism is unlocked.

The seat part 1 is provided with a matching groove 12 which is opened towards the outside and extends forwards and backwards, correspondingly, the lower end of the backrest 2 is provided with an accommodating part 21, one side of the accommodating part 21 is provided with a connecting part, the connecting part extends into the matching groove 12, so that the seat part 1 is connected with the backrest 2, and the front side of the side wall of the matching groove 12 far away from the accommodating part 21 is provided with the first locking hole 11; the accommodating portion 21 is provided with an accommodating space 211, the connecting portion is provided with a through hole (not shown) penetrating through the accommodating space 211 from left to right and communicating with the accommodating space 211, the first driving member 42 is connected to the accommodating space 211 to move up and down relatively, and when the seat is in the unfolded state, one end of the first locking member 41 facing the seating portion 1 can penetrate through the through hole and then extend into the first locking hole 11.

The first driving member 42 is provided with a through hole 423 penetrating left and right, the front and rear side walls of the through hole 423 are respectively provided with the first driving hole 421, and one side of the first locking member 41 facing away from the seat portion 1 passes through the through hole 423. With the arrangement, the front and rear side walls of the through hole 423 play a role in guiding, so that the first locking piece 41 can move left and right more conveniently; but also the space occupied by the first driving member 42 and the first locking member 41 is made smaller, thereby making the overall structure more compact.

In this embodiment, a first connecting seat 44 is relatively fixedly disposed in the accommodating space 211, the first connecting seat 44 is provided with an accommodating cavity 441 which is opened upward, and the first driving member 42 is disposed in the accommodating cavity 441 and can move up and down relatively; a through hole penetrating left and right is formed in the side wall of the accommodating cavity 441 facing the seat portion 1, so that the first locking member 41 can pass through the through hole, the first locking member 41 can be conveniently connected and moved left and right, the front side wall and the rear side wall of the accommodating cavity 441 are respectively provided with a long slot 443, and the front end and the rear end of the first pin 43 respectively extend into the long slot 443. So configured, when the first driving member 42 moves downward, the first inclined surface 422 pushes the first pin 43 to move away from the seat 1, and the first pin 43 extends the slot 443 to move. Thus, the elongated slot 443 guides the movement of the first pin 43, and the front and rear sidewalls of the through hole 423 guide the first locking member 41, so that the left and right movement of the first locking member 41 is smoother and the path is more accurate, thereby further ensuring that one end of the first locking member 41 can accurately extend into the first locking hole when the seat is in the unfolded state.

Preferably, a first elastic member 45 is arranged between the first locking member 41 and the backrest 2, and under the action of the first elastic member 45, the first locking member 41 keeps the trend of moving towards one side of the seating part 1, so that when the seat is in the unfolded state, one end of the first locking member 41 can automatically extend into the first locking hole 11, the first locking mechanism is automatically in the locked state, and the lower end of the backrest 2 cannot move back and forth relative to the seating part 1; or, a first elastic element 45 is disposed between the lower side of the first driving element 42 and the backrest 2, and under the action of the first elastic element 45, the first driving element 42 moves upward, so as to drive the first locking element 41 to move toward the side of the seating part 1.

In this embodiment, an opening 2110 is disposed on a side of the accommodating space 211 away from the seat portion 1, when assembling, the first connecting seat 44, the first driving member 42 and the first locking member 41 may be assembled together, the assembled components are placed into the accommodating space 211 through the opening, one end of the first locking member 41 penetrates through the through hole 442, and then the first connecting seat 44 and the backrest 2 are fixedly connected, and the first connecting seat 44 and the backrest 2 may be fixedly connected by screws or other known and feasible connection methods. Thus, the provision of the opening 2110 facilitates assembly.

A through hole penetrating from left to right is also formed in the side wall of the accommodating cavity 441 on the side away from the sitting portion so as to allow the first locking piece 41 to penetrate through; the first elastic element 45 is configured as a spring, one end of which is installed in the groove 410 on the side of the first locking element 41 away from the seat portion 1, and is connected to the first connecting seat 44 through a cover 46 to abut against the other end of the spring. Specifically, the cover 46 is provided with an elastic finger 461, the first connecting seat 44 is provided with a locking hole 440, and the cover and the first connecting seat 44 are connected by the elastic finger being reversely buckled into the locking hole.

In the present embodiment, the engagement groove 12 includes a communicating portion 121 and an accommodating portion 122 that communicate left and right, and the vertical height of the communicating portion 121 is smaller than the vertical height of the accommodating portion 122; the connecting part comprises a neck part 22 arranged on one side of the accommodating part 21 and a limiting part 23 arranged on one end of the neck part 22 far away from the accommodating part 21, the upper and lower heights of the neck part 22 are lower than those of the limiting part 23, and the upper and lower heights of the limiting part 23 are higher than those of the communication part 121; the neck portion 22 is disposed in the communicating portion 121 so as to be movable forward and backward relative to each other, the accommodating portion 122 is disposed in the accommodating portion 122 so as to be movable forward and backward relative to each other, and the accommodating portion 21 is located outside the seat portion 1. The first locking hole 11 is provided on the front side of the side wall of the accommodating portion 122 on the side away from the communicating portion 121.

The entire accommodating portion 21, the neck portion 22, and the stopper portion 23 may be rotatable with respect to the seat portion 1, that is, the neck portion 22 may also be rotatable with respect to the communicating portion 121, and the stopper portion 23 may also be rotatable with respect to the accommodating portion 122, for example, a roller may be fixedly connected to an end of the neck portion 22 away from the accommodating portion 21 through a bearing to form the stopper portion 23; the stopper 23 may not be rotatable with respect to the seat 1, and the neck 22 may be rotatably connected to the stopper 23; in this way, the lower end of the backrest 2 can be connected to the seat portion 1 so as to be rotatable relative thereto.

In this embodiment, the backrest 2 includes a lower backrest portion 24 and an upper backrest portion 25 having a lower side connected to the lower backrest portion 24 so as to be movable up and down relatively, the first locking mechanism is disposed between the lower end of the lower backrest portion 24 and the sitting portion 1, a second locking mechanism for limiting the relative up and down movement of the upper backrest portion 25 and the lower backrest portion 24 is disposed between the lower side of the upper backrest portion 25 and the lower backrest portion 24, and the first locking mechanism and the second locking mechanism are configured such that the second locking mechanism can be unlocked by moving the upper backrest portion 25 down after the second locking mechanism is unlocked. So set up for when folding seat, can also reduce and lean against 2 whole length, thereby can make the whole volume after the seat is folding littleer.

Preferably, a second connecting seat 5 is fixedly connected to the lower side of the lower backrest portion 24, a driving portion 50 is arranged at the lower end of the second connecting seat 5, the lower end of the driving portion 50 is located outside the lower end of the upper backrest portion 25, after the second locking mechanism is unlocked, the upper backrest portion 25 is moved downward, and the driving portion 50 of the second connecting seat 5, which moves downward together with the upper backrest portion, can push the first driving member 42 to move downward, so that the first locking mechanism is unlocked.

In this embodiment, the second locking mechanism includes a second driving element 61 disposed in the upper backrest 25 and connected to the second connecting seat 5 in a manner of moving up and down relatively, and a second locking element 62 connected to the second connecting seat 5 and the second driving element 61 in a manner of moving up and down relatively, the lower side of the upper backrest 25 is connected to the lower backrest 24 in a manner of moving up and down relatively, a through hole 251 and a second locking hole 241 are respectively disposed on the side walls of the upper backrest 25 corresponding to the lower backrest 24, when one end of the second locking element 62 is inserted into the second locking hole 241 after passing through the through hole 251, the second locking mechanism is in a locked state, and the upper backrest 25 and the lower backrest 24 cannot move up and down relatively; moving the second driving member 61 upward drives the second locking member 62 to a side away from the second locking hole 241 and to disengage from the second locking hole 241, thereby unlocking the second locking mechanism.

Preferably, the second connecting seat 5 is provided with an accommodating groove 51 opened toward one side of the through hole 251, and the other end of the second driving member 61 is relatively movably disposed in the accommodating groove 51; a second driving hole 611 is formed in the second driving member 61, and a side wall of the second driving hole 611 is provided with a second inclined surface 612; correspondingly, the second connecting seat 5 is provided with a second long hole 52, the second locking member 62 is provided with a second connecting hole 621, and a second rivet 63 passes through the second driving hole 611, the second long hole 52 and the second connecting hole 621 of the second locking member 62, so as to connect the second driving member 61, the second connecting seat 5 and the second locking member 62. When the second driving member 61 is moved upwards, the second rivet 63 is driven to move along the second long hole 52 of the second connecting seat 5 in a direction away from the second locking hole 241 under the action of the second inclined surface 612 of the second driving member, so that the second locking member 62 also moves along with the second rivet 63 in a direction away from the second locking hole 241, and when the second locking member 62 is disengaged from the second locking hole 241, the second locking mechanism is unlocked. At this time, the upper backrest 25 is pushed downward, the second locking member 62, the second driving member 61, and the second connecting seat 5 move downward relative to the lower backrest 24, and the driving portion 50 at the lower end of the second connecting seat 5 drives the first driving member 42 to unlock the first locking mechanism when moving to a certain distance.

A second elastic member is arranged between the second locking member 62 and the second connecting seat 5, under the action of the second elastic member, the second locking member 62 keeps the trend of moving towards one side of the through hole 251, so that when the upper backrest portion 25 and the lower backrest portion 24 are in a relatively unfolded state, one end of the second locking member 62 can automatically penetrate through the through hole 251 and then extend into the second locking hole 241, and the second locking mechanism is automatically in a locked state, namely, the upper backrest portion 25 and the lower backrest portion 24 are automatically locked in the unfolded state, so that the operation is more convenient; or, a second elastic member 65 is disposed between the second driving member 61 and the second connecting seat 5, and under the action of the second elastic member 65, the second driving member 61 keeps a tendency of moving downward, so that the second locking member 62 also keeps a tendency of moving toward one side of the through hole 251.

In this embodiment, the second connecting seat 5 is provided with a third long hole 53 extending up and down, a third rivet 64 passes through the third long hole 53 and is connected to the second driving member 61, the second elastic member 65 is a spring, the lower end of the spring abuts against the third rivet 64, and the upper end of the spring abuts against the upper end of the third long hole 53, so that the second driving member 61 keeps a tendency of moving down, i.e. the second locking member 62 keeps a tendency of moving toward one side of the through hole 251.

In this embodiment, the upper backrest 25 is provided with a driving device 7, a connecting member (not shown) is connected to the driving device 7 at an upper end, and connected to the second driving member 61 at a lower end, and the driving device 7 is operated to pull the connecting member to move upward, so as to drive the second driving member 61 to move upward to unlock the second locking mechanism. The connecting member may be a steel wire, and the driving mechanism may be any known and feasible structure, which is not the utility model point of the present invention and thus will not be described herein.

Preferably, an inner tube 8 is relatively fixedly arranged in the lower backrest 24, the lower end of the upper backrest 25 is relatively movably arranged in the inner tube 8 up and down, a guide hole 81 extending up and down is arranged on the side wall of the inner tube 8, and the end of a connecting piece 82 (rivet, screw or pin) connecting the upper backrest 25 and the second connecting seat 5 extends into the guide hole 81. When the upper backrest portion 25, the second locking member 62, the second driving member 61 and the second connecting seat 5 move up and down relative to the lower backrest portion 24, the end of the connecting member connecting the upper backrest portion 25 and the second connecting seat 5 moves up and down along the guiding hole 81, so that the upper backrest portion 25, the second locking member 62, the second driving member 61 and the second connecting seat 5 move up and down relative to the lower backrest portion 24 more smoothly, and the moving path of the upper backrest portion, the second locking member and the second connecting seat 5 is not changed, thereby further ensuring that the driving portion 50 at the lower end of the second connecting seat 5 can accurately extend into the accommodating cavity 441 of the first connecting seat 44 to push the first locking member 41 when the seat is folded.

In this embodiment, when assembling the inner tube 8, the inner tube 8 is first placed in the lower backrest 24, and at this time, a fixing member 83 is fixedly assembled at the upper end of the lower backrest 24, and the upper end of the inner tube 8 abuts against the fixing member 83, so that the inner tube 8 is relatively fixed with respect to the lower backrest 24. Preferably, in order to facilitate assembly, the fixing member 83 includes a top portion 831, and a fixing portion 832 and a positioning portion 833 respectively extending downward from two sides of the top portion 831; correspondingly, the side wall of the lower backrest 24 is provided with a notch 240 which is opened upward, when assembling, the top 831 of the fixing member 83 is disposed at the upper end of the lower backrest 24, the positioning portion 833 is inserted into the notch 240, the fixing portion 832 is disposed at the other side of the lower backrest 24, the upper end of the inner tube 8 abuts against the top 831 of the fixing member 83, and then the fixing portion 832 of the fixing member 83 is fixedly connected with the lower backrest 24, i.e. the lower backrest 24, the fixing member 83 and the inner tube 8 are relatively fixed.

In other embodiments, the inner tube 8 and the fixing member 83 may not be provided, but a groove extending up and down may be directly provided on the inner wall of the lower backrest portion 24, and the end of the connecting member 82 connecting the upper backrest portion 25 and the second connecting seat 5 may move up and down along the groove, so as to achieve the purpose of guiding.

The upper front end of the support member 3 is pivotally connected to the lower backrest portion 24.

The folding principle of the chair of the utility model is as follows:

when the seat is in the unfolded state, under the action of the first elastic member 45, one end of the first locking member 41 is inserted into the first locking hole 11 of the seating part 1, so that the lower end of the lower backrest 2 cannot move relative to the seating part 1; under the action of the second elastic member 65, one end of the second locking member 62 is inserted into the second locking hole 241 on the upper side of the lower backrest portion 24, so that the upper backrest portion 25 and the lower backrest portion 24 cannot move up and down relatively, and thus the seat is locked in the unfolded state.

When the seat is to be folded, as shown in fig. 6 and 7, the driving device 7 at the upper end of the upper backrest 25 is operated, the second locking mechanism is unlocked through the steel wire, and then the upper backrest 25 is pushed downwards, so that the upper backrest 25, the second locking member 62, the second driving member 61 and the second connecting seat 5 can move downwards relative to the lower backrest 24 together; when the backrest 2 moves to a certain distance, the pushing portion at the lower end of the second connecting seat 5 extends into the accommodating cavity 441 of the first connecting seat 44 to push the first driving member 42 to move downward, and under the action of the first inclined surface 422 of the first driving member 42, the first pin 43 moves along the long slot 443 of the first connecting seat 44 in the direction away from the sitting portion, so as to drive the first locking member 41 to move together toward the side away from the sitting portion 1 until the first locking member 41 disengages from the first locking hole 11 of the sitting portion 1, the first locking mechanism is unlocked, and at this time, the whole backrest 2 can move backward relative to the sitting portion 1. So that the lower side of the backrest 2 moves backward relative to the sitting portion 1, and the front upper end of the supporting member 3 also moves backward along with the rotation (as shown in fig. 10); when the lower end of the backrest 2 moves to the position where the backrest 2 can not move backward, the backrest 2 rotates forwards and downwards, the support 3 is driven by the backrest 2 to rotate downwards until the backrest 2 can not rotate any more, at this time, the backrest 2 and the support 3 are both close to the sitting part 1, and the seat is completely folded (as shown in 11 and 12).

Preferably, a third locking hole 242 (as shown in fig. 3) is provided on the wall portion of the lower backrest portion 24 on the same side as the second locking hole 241, and one end of the second locking member can extend into the third locking hole 242, so that when the upper backrest portion 25 moves downward to unlock the first locking mechanism, under the action of the restoring force of the second elastic member 65, one end of the second locking member 62 passes through the through hole 251 and then is inserted into the third locking hole 242, thereby locking the seat in the folded state, and thus, the unfolding of the folded seat during the transportation process can be avoided, thereby facilitating the transportation. When the folded seat is to be unfolded, the second locking hole 241 on the upper side of the lower back 24 is operated, so that the second locking member 62 is disengaged from the third locking hole 242 as the second locking mechanism is unlocked, and the backrest 2 is rotated in the reverse direction.

Correspondingly, a lower through hole corresponding to the third locking hole 242 is formed in a side wall of the lower side of the inner tube 8, so that the second locking member 62 can pass through the lower through hole once and then extend into the third locking hole 242 when the seat is folded.

In this embodiment, preferably, the seat further includes a canopy seat 9 disposed on the upper backrest portion 25, and a canopy 91 with one end pivoted to the canopy seat 9, in the folding process of the seat, when the upper backrest portion 25 moves downward until the lower end of the canopy seat 9 abuts against the upper end of the fixing member 83, the upper backrest portion 25 cannot move downward, and at this time, the first locking mechanism is in an unlocked state, so that the backrest 2 can move backward relative to the sitting portion 1. If the inner tube 8 and the fixing seat 83 are not provided, when the upper backrest 25 moves downward until the lower end of the canopy seat 9 abuts against the upper end of the lower backrest 24, the upper backrest 25 cannot move downward any more, and the first locking mechanism is also in an unlocked state. Therefore, the operation is more visual, and the operator can more conveniently master the operation time. To reduce the folding volume, the canopy strip can be rotated in the direction of the backrest 2 to approach the backrest 2. The connection of the canopy seat 9 and the canopy strip 91 is well known in the art and is not the point of the present invention, and therefore will not be described herein.

The utility model also discloses a baby carriage, and the seat is arranged on the baby carriage.

Claims (35)

1. A seat convertible between an extended position and a folded position, comprising: the seat comprises a sitting part, a backrest and a supporting part, wherein the lower end of the backrest is pivoted with the sitting part and can move back and forth relative to the sitting part, the lower end of the supporting part is pivoted with the sitting part, and the upper end of the supporting part is pivoted with the backrest; when the seat is in the unfolding state, the pivoting position of the lower end of the backrest and the sitting part and the pivoting position of the lower end of the support piece and the sitting part are arranged at intervals from front to back.

2. The seat according to claim 1, wherein: the pivoting position of the lower end of the backrest and the sitting part is positioned at the front side of the pivoting position of the lower end of the support part and the sitting part; the back lower end of the supporting piece is pivoted on the sitting part, and the front upper end of the supporting piece is pivoted on the backrest.

3. The seat according to claim 1 or 2, wherein: a first locking mechanism for preventing the backrest from moving back and forth relative to the sitting part is arranged between the lower end of the backrest and the sitting part.

4. The seat according to claim 3, wherein: the first locking mechanism comprises a first locking piece and a first locking hole, the first locking piece is connected to the lower side of the backrest in a relatively left-right moving mode, the first locking hole is formed in the sitting portion, and the first locking piece can extend into the first locking hole from one side, facing the sitting portion, of the first locking piece.

5. The seat according to claim 4, wherein: a first driving piece can be connected to the inside of the lower side of the backrest in a relatively up-and-down moving mode, the first driving piece is connected with the first locking piece, and the first driving piece moving downwards can drive the first locking piece to move towards one side far away from the riding part.

6. The seat according to claim 5, wherein: the seat part is provided with a matching groove which is opened towards the outside and extends forwards and backwards, correspondingly, the lower end of the backrest is provided with an accommodating part, one side of the accommodating part is provided with a connecting part, the connecting part extends into the matching groove, and the front side of the side wall of the matching groove, which is far away from the accommodating part, is provided with the first locking hole; the seat is characterized in that an accommodating space is formed in the accommodating part, a through hole which penetrates through the connecting part from left to right and is communicated with the accommodating space is formed in the connecting part, the first driving part can be connected in the accommodating space in a relatively up-and-down moving mode, and when the seat is in an unfolded state, one end, facing the sitting part, of the first locking part can penetrate through the through hole and then extend into the first locking hole.

7. The seat according to claim 6, wherein: a first connecting seat relatively fixedly set up in the accommodation space, first connecting seat is provided with up open-ended and holds the chamber, first driving piece relatively set up with reciprocating in hold the intracavity, just hold the chamber and be provided with on the lateral wall towards taking portion one side and control the through-hole that runs through so that first locking piece passes.

8. The seat according to claim 7, wherein: an opening is formed in one side, far away from the sitting portion, of the accommodating space.

9. The seat according to claim 7, wherein: the first driving piece is provided with a through hole which is arranged in a penetrating mode from left to right, one side, back to the sitting portion, of the first locking piece penetrates through the through hole, first driving holes are formed in the front side wall and the rear side wall of the through hole respectively, one side wall of each first driving hole is provided with a first inclined surface, a first connecting hole is formed in the first locking piece, and a first pin penetrates through the first connecting hole and the first driving hole; the front side wall and the rear side wall of the accommodating cavity are provided with slotted holes, and the front end and the rear end of the first pin bolt respectively extend into the slotted holes.

10. The seat according to any one of claims 5 to 9, wherein: and a first elastic piece is arranged between the first locking piece and the backrest or between the lower side of the first driving piece and the backrest, and the first locking piece keeps the trend of moving towards one side of the sitting part under the action of the first elastic piece.

11. The seat according to claim 3, wherein: the backrest comprises a lower backrest part and an upper backrest part, the lower side of the upper backrest part can be relatively and vertically moved and is connected with the lower backrest part, and the front upper end of the supporting piece is pivoted with the lower backrest part; first locking mechanical system set up in between lower back lower extreme and the seat, be provided with between upper back downside and the lower back and be used for restricting the relative second locking mechanical system that reciprocates of both, just first locking mechanical system and second locking mechanical system are set up to, after second locking mechanical system unblock, but the lower back of moving down unlocks the second locking mechanical system.

12. The seat according to claim 11, wherein: the lower side of the lower backrest part is fixedly connected with a second connecting seat, the lower end of the second connecting seat is provided with a driving part, the lower end of the driving part is positioned outside the lower end of the upper backrest part, the upper backrest part is moved downwards after the second locking mechanism is unlocked, and the driving part of the second connecting seat which moves downwards together with the upper backrest part can push the first driving part to move downwards.

13. The seat according to claim 12, wherein: the second locking mechanism comprises a second driving piece arranged in the upper backrest part and connected with the second connecting seat in a relatively up-down moving mode, a second locking piece connected with the second connecting seat in a relatively up-down moving mode, the lower side of the upper backrest part is connected with the lower backrest part in a relatively up-down moving mode, a through hole and a second locking hole are respectively formed in the side walls of the corresponding positions of the upper backrest part and the lower backrest part, and when one end of the second locking piece penetrates through the through hole and is inserted into the second locking hole, the second locking mechanism is in a locking state.

14. The seat according to claim 13, wherein: the second connecting seat is provided with an accommodating groove which is open towards one side of the via hole, the other end of the second driving piece can move relatively to the accommodating groove, a second driving hole is formed in the second driving piece, and a side wall of the second driving hole is a second inclined surface.

15. The seat according to claim 14, wherein: the second connecting seat is provided with a second long hole, the second locking piece is provided with a second connecting hole, and a second rivet penetrates through the second connecting hole in the second driving hole, the second long hole and the second locking piece to connect the second driving piece, the second connecting seat and the second locking piece.

16. The seat according to claim 13 or 14 or 15, wherein: a second elastic piece is arranged between the second locking piece and the second connecting seat or between the second driving piece and the second connecting seat, and under the action of the second elastic piece, the second locking piece keeps the trend of moving towards one side of the through hole; preferably, a wall portion of the lower side of the lower backrest portion on the same side as the second locking hole is provided with a third locking hole into which one end of the second locking member can extend.

17. The seat according to any one of claims 4 to 9, wherein: the backrest comprises a lower backrest part and an upper backrest part, the lower side of the upper backrest part can be relatively and vertically moved and is connected with the lower backrest part, and the front upper end of the supporting piece is pivoted with the lower backrest part; first locking mechanical system set up in between lower back lower extreme and the seat, be provided with between upper back downside and the lower back and be used for restricting the relative second locking mechanical system that reciprocates of both, just first locking mechanical system and second locking mechanical system are set up to, after second locking mechanical system unblock, but the lower back of moving down unlocks the second locking mechanical system.

18. The seat according to claim 17, wherein: the lower side of the lower backrest part is fixedly connected with a second connecting seat, the lower end of the second connecting seat is provided with a driving part, the lower end of the driving part is positioned outside the lower end of the upper backrest part, the upper backrest part is moved downwards after the second locking mechanism is unlocked, and the driving part of the second connecting seat which moves downwards together with the upper backrest part can push the first driving part to move downwards.

19. The seat according to claim 18, wherein: the second locking mechanism comprises a second driving piece arranged in the upper backrest part and connected with the second connecting seat in a relatively up-down moving mode, a second locking piece connected with the second connecting seat in a relatively up-down moving mode, the lower side of the upper backrest part is connected with the lower backrest part in a relatively up-down moving mode, a through hole and a second locking hole are respectively formed in the side walls of the corresponding positions of the upper backrest part and the lower backrest part, and when one end of the second locking piece penetrates through the through hole and is inserted into the second locking hole, the second locking mechanism is in a locking state.

20. The seat according to claim 19, wherein: the second connecting seat is provided with an accommodating groove which is open towards one side of the via hole, the other end of the second driving piece can move relatively to the accommodating groove, a second driving hole is formed in the second driving piece, and a side wall of the second driving hole is a second inclined surface.

21. The seat according to claim 20, wherein: the second connecting seat is provided with a second long hole, the second locking piece is provided with a second connecting hole, and a second rivet penetrates through the second connecting hole in the second driving hole, the second long hole and the second locking piece to connect the second driving piece, the second connecting seat and the second locking piece.

22. The seat according to claim 19 or 20 or 21, wherein: a second elastic piece is arranged between the second locking piece and the second connecting seat or between the second driving piece and the second connecting seat, and under the action of the second elastic piece, the second locking piece keeps the trend of moving towards one side of the through hole; preferably, a wall portion of the lower side of the lower backrest portion on the same side as the second locking hole is provided with a third locking hole into which one end of the second locking member can extend.

23. The seat according to claim 10, wherein: the backrest comprises a lower backrest part and an upper backrest part, the lower side of the upper backrest part can be relatively and vertically moved and is connected with the lower backrest part, and the front upper end of the supporting piece is pivoted with the lower backrest part; first locking mechanical system set up in between lower back lower extreme and the seat, be provided with between upper back downside and the lower back and be used for restricting the relative second locking mechanical system that reciprocates of both, just first locking mechanical system and second locking mechanical system are set up to, after second locking mechanical system unblock, but the lower back of moving down unlocks the second locking mechanical system.

24. The seat according to claim 23, wherein: the lower side of the lower backrest part is fixedly connected with a second connecting seat, the lower end of the second connecting seat is provided with a driving part, the lower end of the driving part is positioned outside the lower end of the upper backrest part, the upper backrest part is moved downwards after the second locking mechanism is unlocked, and the driving part of the second connecting seat which moves downwards together with the upper backrest part can push the first driving part to move downwards.

25. The seat according to claim 24, wherein: the second locking mechanism comprises a second driving piece arranged in the upper backrest part and connected with the second connecting seat in a relatively up-down moving mode, a second locking piece connected with the second connecting seat in a relatively up-down moving mode, the lower side of the upper backrest part is connected with the lower backrest part in a relatively up-down moving mode, a through hole and a second locking hole are respectively formed in the side walls of the corresponding positions of the upper backrest part and the lower backrest part, and when one end of the second locking piece penetrates through the through hole and is inserted into the second locking hole, the second locking mechanism is in a locking state.

26. The seat according to claim 25, wherein: the second connecting seat is provided with an accommodating groove which is open towards one side of the via hole, the other end of the second driving piece can move relatively to the accommodating groove, a second driving hole is formed in the second driving piece, and a side wall of the second driving hole is a second inclined surface.

27. The seat according to claim 26, wherein: the second connecting seat is provided with a second long hole, the second locking piece is provided with a second connecting hole, and a second rivet penetrates through the second connecting hole in the second driving hole, the second long hole and the second locking piece to connect the second driving piece, the second connecting seat and the second locking piece.

28. The seat according to claim 25 or 26 or 27, wherein: a second elastic piece is arranged between the second locking piece and the second connecting seat or between the second driving piece and the second connecting seat, and under the action of the second elastic piece, the second locking piece keeps the trend of moving towards one side of the through hole; preferably, a wall portion of the lower side of the lower backrest portion on the same side as the second locking hole is provided with a third locking hole into which one end of the second locking member can extend.

29. The seat according to any one of claims 12 to 15, 18 to 21, 24 to 27, wherein: the lower backrest part is internally and relatively fixedly provided with an inner pipe, the lower end of the upper backrest part can be arranged in the inner pipe in a relatively up-and-down moving mode, the side wall of the inner pipe is provided with a guide hole extending up and down, and the end part of a connecting piece for connecting the upper backrest part and the second connecting seat extends into the guide hole.

30. The seat according to claim 29, wherein: the seat further comprises a top canopy seat arranged on the upper backrest part and a canopy with one end pivoted to the top canopy seat, and when the upper backrest part moves downwards to the position where the lower end of the top canopy seat abuts against the upper end of the lower backrest part, the first locking mechanism is in an unlocking state.

31. The seat according to claim 16, wherein: the lower backrest part is internally and relatively fixedly provided with an inner pipe, the lower end of the upper backrest part can be arranged in the inner pipe in a relatively up-and-down moving mode, the side wall of the inner pipe is provided with a guide hole extending up and down, and the end part of a connecting piece for connecting the upper backrest part and the second connecting seat extends into the guide hole.

32. The seat according to claim 22, wherein: the lower backrest part is internally and relatively fixedly provided with an inner pipe, the lower end of the upper backrest part can be arranged in the inner pipe in a relatively up-and-down moving mode, the side wall of the inner pipe is provided with a guide hole extending up and down, and the end part of a connecting piece for connecting the upper backrest part and the second connecting seat extends into the guide hole.

33. The seat according to claim 28, wherein: the lower backrest part is internally and relatively fixedly provided with an inner pipe, the lower end of the upper backrest part can be arranged in the inner pipe in a relatively up-and-down moving mode, the side wall of the inner pipe is provided with a guide hole extending up and down, and the end part of a connecting piece for connecting the upper backrest part and the second connecting seat extends into the guide hole.

34. The seat according to any one of claims 31 to 33, wherein: the seat further comprises a top canopy seat arranged on the upper backrest part and a canopy with one end pivoted to the top canopy seat, and when the upper backrest part moves downwards to the position where the lower end of the top canopy seat abuts against the upper end of the lower backrest part, the first locking mechanism is in an unlocking state.

35. A stroller, characterized in that: comprising a seat as claimed in any one of claims 1 to 34.

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